💥 Breaking Change
Starting with this release for a proper work of i18n functionality, you need to either use Node v14+ or in case of using earlier version of Node.js install full-icu
package and set NODE_ICU_DATA
environment variable in your npm scripts, for example:
"scripts": {
"start": "cross-env NODE_ICU_DATA=node_modules/full-icu docusaurus start"
}